Laws Of Motion Question 329
Question: A horizontal force of 10 N is necessary to just hold a block stationary against a wall. The coefficient of friction between the block and the wall is 0.2. The weight of the block is
Options:
A) 20 N
B) 50 N
C) 100 N
D) 2 N
Show Answer
Answer:
Correct Answer: D
Solution:
[d] For the block to remain stationary with the wall $ f=W $
$ \mu N=W $
$ 0.2\times 10=W\Rightarrow W=2N $
